Tetrakis(trifluoromethyl)cyclopentadienyl ligands for transition metals
作者:Mark J. Burk、Anthony J. Arduengo、Joseph C. Calabrese、Richard L. Harlow
DOI:10.1021/ja00206a038
日期:1989.11
Synthese de tetrakis-[trifluoromethyl]-1,2,3,4 triethylsiloxy-5 ruthenocene a partir de tetrakis-trifluoromethyl cyclopentadienone, de triethyl silane et du complexe [Cp* Ru(MeCN) 3 ] + O 3 SCF 3 − (Cp*=pentamethylcyclopentadienyl)
合成这些 de 四-[三氟甲基]-1,2,3,4 三乙基甲硅烷氧基-5 ruthenocene a partir de四-三氟甲基环戊二烯酮,de 三乙基硅烷 et du complexe [Cp* Ru(MeCN) 3 ] + O 3 SCF 3 - (Cp *=五甲基环戊二烯基)
Oxidatively induced reductive elimination. A novel titanium complex resulting from C–F bond activation
作者:Mark J. Burk、Donna L. Staley、William Tumas
DOI:10.1039/c39900000809
日期:——
Reaction between bis(cyclopentadienyl)titanacyclobutanes (1) and tetrakis(trifluoromethyl)cyclopentadienone (2) results in formal reductive elimination of cyclopropanes and activation of an sp3 C–F bond in (2) to afford the novel organometallic product (3)(structurally characterized by X-ray crystallography).
The ability of 2,3,4,5- tetrakis(trifluoromethyl)cyclopenta-2,4-dien-1-one and 2,3,4,5- tetrakis(pentafluorophenyl)cyclopenta-2,4-dien-1-one to act as organic Lewis acids in the field of frustrated Lewis pair (FLP) chemistry was evaluated. Whereas the former ketone formed zwitterionic adducts with all phosphines studied, the latter did not react with bulky phosphines and, instead, gave completely organic FLPs. Unfortunately, these did not activate dihydrogen, even under high pressures.
Perfluorotetramethylcyclopentadienone as a Diels-Alder diene